Jazz is a manifestation of Judeo-Negroid-American "cultural" defecation, masquerading as music. When it first come out, it was seen as a degenerate, unpleasant music. But today the degenerate music has degenerated so far (e.g. Madonna, Michael Jackson, etc) that jazz is considered in league with classical and relaxing by Anglos and French especially. The plague began in the United States in the 1910s and had infected many Western nations in the 1920s and 1930s, after then it became more obscure.